Formal testing of the fit of racial classifications to genetic diversity patterns show that they are not reflective of actual genetic diversity https://www.ncbi.nlm.nih.gov/m/pubmed/19226648/ …
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We can study genetics and how they affect the performance amongst social classes but not race for some reason
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How can we study the "genetics of social class" (whatever that means) and how it relates to performance?
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Way you study any possible genetic differences between groups. Usually by taking advantage of things like adoption, charter schools, etc
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Adoption studies are useless.
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http://www.mdpi.com/2079-3200/5/1/1 Transracial adoption studies support the null hypothesis just like transclass ones.
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https://www.ncbi.nlm.nih.gov/m/pubmed/23865114/ … Adoption studies when they really approximate random study design essentially support the null hypothesis.
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Have you read Jay Joseph's book
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You mean "The trouble with twin studies "? About 2/3 Yes. On adoption studies he cites Leon Kamin's critics in the book. The article i tweeted is one of his about a well conducted adoption study.
End of conversation
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